glibc/sysdeps/alpha/alphaev67/strchr.S

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Update. 2000-12-08 Jakub Jelinek <jakub@redhat.com> * elf/dl-load.c (fillin_rpath): Don't assume there is '\0' at cp + len. Compute where from dirname. Reported by <jreiser@BitWagon.com>. 2000-12-08 Richard Henderson <rth@twiddle.net> * sysdeps/alpha/_mcount.S: Fix typo. * sysdeps/alpha/strncpy.S: Likewise. * sysdeps/alpha/alphaev6/Implies: New file. * sysdeps/alpha/alphaev67/Implies: New file. * sysdeps/alpha/alphaev67/ffs.S: New file. * sysdeps/alpha/alphaev67/ffsll.S: New file. * sysdeps/alpha/alphaev67/rawmemchr.S: New file. * sysdeps/alpha/alphaev67/stpcpy.S: New file. * sysdeps/alpha/alphaev67/stpncpy.S: New file. * sysdeps/alpha/rawmemchr.S: New file. * sysdeps/alpha/strcat.S: Tail call to __stxcpy. * sysdeps/alpha/strcpy.S: Likewise. From GMP 3.1.1: * sysdeps/alpha/alphaev6/addmul_1.s: New file. From rick.gorton@alpha-processor.com: * sysdeps/alpha/alphaev6/memchr.S: New file. * sysdeps/alpha/alphaev6/memcpy.S: New file. * sysdeps/alpha/alphaev6/memset.S: New file. * sysdeps/alpha/alphaev6/stxcpy.S: New file. * sysdeps/alpha/alphaev6/stxncpy.S: New file. * sysdeps/alpha/alphaev67/strcat.S: New file. * sysdeps/alpha/alphaev67/strchr.S: New file. * sysdeps/alpha/alphaev67/strlen.S: New file. * sysdeps/alpha/alphaev67/strncat.S: New file. * sysdeps/alpha/htonl.S: Use a shorter sequence. 2000-12-08 Jakub Jelinek <jakub@redhat.com> * inet/getnameinfo.c (getnameinfo): Fix NI_NOFQDN support. Reported by <pspencer@fields.utoronto.ca>. 2000-12-07 Jes Sorensen <jes@linuxcare.com> * sysdeps/ia64/elf/start.S (__data_start): Add __data_start variable. Pointed out by Hans Boehm. 2000-12-07 H.J. Lu <hjl@gnu.org> * elf/dl-version.c (match_symbol): Check map->l_name[0] for printing. 2000-12-07 Andreas Jaeger <aj@suse.de> * misc/error.c: Add format attributes for __error and __error_at_line. * nscd/dbg_log.h: Add format attribute. 2000-12-08 Ulrich Drepper <drepper@redhat.com> * misc/sys/syslog.h: Add format attributes to syslog and vsyslog. Patch by Joseph S. Myers <jsm28@cam.ac.uk>. * sysdeps/generic/dl-cache.c (HWCAP_CHECK): Fix access to _dl_hwcap. * manual/install.texi: Recommend to set LANGUAGE=C LC_ALL=C during
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/* Copyright (C) 2000 Free Software Foundation, Inc.
Contributed by Richard Henderson <rth@tamu.edu>, 1996.
EV67 optimized by Rick Gorton <rick.gorton@alpha-processor.com>.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Update. 2000-12-08 Jakub Jelinek <jakub@redhat.com> * elf/dl-load.c (fillin_rpath): Don't assume there is '\0' at cp + len. Compute where from dirname. Reported by <jreiser@BitWagon.com>. 2000-12-08 Richard Henderson <rth@twiddle.net> * sysdeps/alpha/_mcount.S: Fix typo. * sysdeps/alpha/strncpy.S: Likewise. * sysdeps/alpha/alphaev6/Implies: New file. * sysdeps/alpha/alphaev67/Implies: New file. * sysdeps/alpha/alphaev67/ffs.S: New file. * sysdeps/alpha/alphaev67/ffsll.S: New file. * sysdeps/alpha/alphaev67/rawmemchr.S: New file. * sysdeps/alpha/alphaev67/stpcpy.S: New file. * sysdeps/alpha/alphaev67/stpncpy.S: New file. * sysdeps/alpha/rawmemchr.S: New file. * sysdeps/alpha/strcat.S: Tail call to __stxcpy. * sysdeps/alpha/strcpy.S: Likewise. From GMP 3.1.1: * sysdeps/alpha/alphaev6/addmul_1.s: New file. From rick.gorton@alpha-processor.com: * sysdeps/alpha/alphaev6/memchr.S: New file. * sysdeps/alpha/alphaev6/memcpy.S: New file. * sysdeps/alpha/alphaev6/memset.S: New file. * sysdeps/alpha/alphaev6/stxcpy.S: New file. * sysdeps/alpha/alphaev6/stxncpy.S: New file. * sysdeps/alpha/alphaev67/strcat.S: New file. * sysdeps/alpha/alphaev67/strchr.S: New file. * sysdeps/alpha/alphaev67/strlen.S: New file. * sysdeps/alpha/alphaev67/strncat.S: New file. * sysdeps/alpha/htonl.S: Use a shorter sequence. 2000-12-08 Jakub Jelinek <jakub@redhat.com> * inet/getnameinfo.c (getnameinfo): Fix NI_NOFQDN support. Reported by <pspencer@fields.utoronto.ca>. 2000-12-07 Jes Sorensen <jes@linuxcare.com> * sysdeps/ia64/elf/start.S (__data_start): Add __data_start variable. Pointed out by Hans Boehm. 2000-12-07 H.J. Lu <hjl@gnu.org> * elf/dl-version.c (match_symbol): Check map->l_name[0] for printing. 2000-12-07 Andreas Jaeger <aj@suse.de> * misc/error.c: Add format attributes for __error and __error_at_line. * nscd/dbg_log.h: Add format attribute. 2000-12-08 Ulrich Drepper <drepper@redhat.com> * misc/sys/syslog.h: Add format attributes to syslog and vsyslog. Patch by Joseph S. Myers <jsm28@cam.ac.uk>. * sysdeps/generic/dl-cache.c (HWCAP_CHECK): Fix access to _dl_hwcap. * manual/install.texi: Recommend to set LANGUAGE=C LC_ALL=C during
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The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
Update. 2000-12-08 Jakub Jelinek <jakub@redhat.com> * elf/dl-load.c (fillin_rpath): Don't assume there is '\0' at cp + len. Compute where from dirname. Reported by <jreiser@BitWagon.com>. 2000-12-08 Richard Henderson <rth@twiddle.net> * sysdeps/alpha/_mcount.S: Fix typo. * sysdeps/alpha/strncpy.S: Likewise. * sysdeps/alpha/alphaev6/Implies: New file. * sysdeps/alpha/alphaev67/Implies: New file. * sysdeps/alpha/alphaev67/ffs.S: New file. * sysdeps/alpha/alphaev67/ffsll.S: New file. * sysdeps/alpha/alphaev67/rawmemchr.S: New file. * sysdeps/alpha/alphaev67/stpcpy.S: New file. * sysdeps/alpha/alphaev67/stpncpy.S: New file. * sysdeps/alpha/rawmemchr.S: New file. * sysdeps/alpha/strcat.S: Tail call to __stxcpy. * sysdeps/alpha/strcpy.S: Likewise. From GMP 3.1.1: * sysdeps/alpha/alphaev6/addmul_1.s: New file. From rick.gorton@alpha-processor.com: * sysdeps/alpha/alphaev6/memchr.S: New file. * sysdeps/alpha/alphaev6/memcpy.S: New file. * sysdeps/alpha/alphaev6/memset.S: New file. * sysdeps/alpha/alphaev6/stxcpy.S: New file. * sysdeps/alpha/alphaev6/stxncpy.S: New file. * sysdeps/alpha/alphaev67/strcat.S: New file. * sysdeps/alpha/alphaev67/strchr.S: New file. * sysdeps/alpha/alphaev67/strlen.S: New file. * sysdeps/alpha/alphaev67/strncat.S: New file. * sysdeps/alpha/htonl.S: Use a shorter sequence. 2000-12-08 Jakub Jelinek <jakub@redhat.com> * inet/getnameinfo.c (getnameinfo): Fix NI_NOFQDN support. Reported by <pspencer@fields.utoronto.ca>. 2000-12-07 Jes Sorensen <jes@linuxcare.com> * sysdeps/ia64/elf/start.S (__data_start): Add __data_start variable. Pointed out by Hans Boehm. 2000-12-07 H.J. Lu <hjl@gnu.org> * elf/dl-version.c (match_symbol): Check map->l_name[0] for printing. 2000-12-07 Andreas Jaeger <aj@suse.de> * misc/error.c: Add format attributes for __error and __error_at_line. * nscd/dbg_log.h: Add format attribute. 2000-12-08 Ulrich Drepper <drepper@redhat.com> * misc/sys/syslog.h: Add format attributes to syslog and vsyslog. Patch by Joseph S. Myers <jsm28@cam.ac.uk>. * sysdeps/generic/dl-cache.c (HWCAP_CHECK): Fix access to _dl_hwcap. * manual/install.texi: Recommend to set LANGUAGE=C LC_ALL=C during
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You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
Update. 2000-12-08 Jakub Jelinek <jakub@redhat.com> * elf/dl-load.c (fillin_rpath): Don't assume there is '\0' at cp + len. Compute where from dirname. Reported by <jreiser@BitWagon.com>. 2000-12-08 Richard Henderson <rth@twiddle.net> * sysdeps/alpha/_mcount.S: Fix typo. * sysdeps/alpha/strncpy.S: Likewise. * sysdeps/alpha/alphaev6/Implies: New file. * sysdeps/alpha/alphaev67/Implies: New file. * sysdeps/alpha/alphaev67/ffs.S: New file. * sysdeps/alpha/alphaev67/ffsll.S: New file. * sysdeps/alpha/alphaev67/rawmemchr.S: New file. * sysdeps/alpha/alphaev67/stpcpy.S: New file. * sysdeps/alpha/alphaev67/stpncpy.S: New file. * sysdeps/alpha/rawmemchr.S: New file. * sysdeps/alpha/strcat.S: Tail call to __stxcpy. * sysdeps/alpha/strcpy.S: Likewise. From GMP 3.1.1: * sysdeps/alpha/alphaev6/addmul_1.s: New file. From rick.gorton@alpha-processor.com: * sysdeps/alpha/alphaev6/memchr.S: New file. * sysdeps/alpha/alphaev6/memcpy.S: New file. * sysdeps/alpha/alphaev6/memset.S: New file. * sysdeps/alpha/alphaev6/stxcpy.S: New file. * sysdeps/alpha/alphaev6/stxncpy.S: New file. * sysdeps/alpha/alphaev67/strcat.S: New file. * sysdeps/alpha/alphaev67/strchr.S: New file. * sysdeps/alpha/alphaev67/strlen.S: New file. * sysdeps/alpha/alphaev67/strncat.S: New file. * sysdeps/alpha/htonl.S: Use a shorter sequence. 2000-12-08 Jakub Jelinek <jakub@redhat.com> * inet/getnameinfo.c (getnameinfo): Fix NI_NOFQDN support. Reported by <pspencer@fields.utoronto.ca>. 2000-12-07 Jes Sorensen <jes@linuxcare.com> * sysdeps/ia64/elf/start.S (__data_start): Add __data_start variable. Pointed out by Hans Boehm. 2000-12-07 H.J. Lu <hjl@gnu.org> * elf/dl-version.c (match_symbol): Check map->l_name[0] for printing. 2000-12-07 Andreas Jaeger <aj@suse.de> * misc/error.c: Add format attributes for __error and __error_at_line. * nscd/dbg_log.h: Add format attribute. 2000-12-08 Ulrich Drepper <drepper@redhat.com> * misc/sys/syslog.h: Add format attributes to syslog and vsyslog. Patch by Joseph S. Myers <jsm28@cam.ac.uk>. * sysdeps/generic/dl-cache.c (HWCAP_CHECK): Fix access to _dl_hwcap. * manual/install.texi: Recommend to set LANGUAGE=C LC_ALL=C during
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/* Return the address of a given character within a null-terminated
string, or null if it is not found. */
#include <sysdep.h>
.arch ev6
.set noreorder
.set noat
ENTRY(strchr)
#ifdef PROF
ldgp gp, 0(pv)
lda AT, _mcount
jsr AT, (AT), _mcount
.prologue 1
#else
.prologue 0
#endif
ldq_u t0, 0(a0) # L : load first quadword Latency=3
and a1, 0xff, t3 # E : 00000000000000ch
insbl a1, 1, t5 # U : 000000000000ch00
insbl a1, 7, a2 # U : ch00000000000000
insbl t3, 6, a3 # U : 00ch000000000000
or t5, t3, a1 # E : 000000000000chch
andnot a0, 7, v0 # E : align our loop pointer
lda t4, -1 # E : build garbage mask
mskqh t4, a0, t4 # U : only want relevant part of first quad
or a2, a3, a2 # E : chch000000000000
inswl a1, 2, t5 # E : 00000000chch0000
inswl a1, 4, a3 # E : 0000chch00000000
or a1, a2, a1 # E : chch00000000chch
or a3, t5, t5 # E : 0000chchchch0000
cmpbge zero, t0, t2 # E : bits set iff byte == zero
cmpbge zero, t4, t4 # E : bits set iff byte is garbage
/* This quad is _very_ serialized. Lots of stalling happens */
or t5, a1, a1 # E : chchchchchchchch
xor t0, a1, t1 # E : make bytes == c zero
cmpbge zero, t1, t3 # E : bits set iff byte == c
or t2, t3, t0 # E : bits set iff char match or zero match
andnot t0, t4, t0 # E : clear garbage bits
cttz t0, a2 # U0 : speculative (in case we get a match)
nop # E :
bne t0, $found # U :
/*
* Yuk. This loop is going to stall like crazy waiting for the
* data to be loaded. Not much can be done about it unless it's
* unrolled multiple times, which is generally unsafe.
*/
$loop:
ldq t0, 8(v0) # L : Latency=3
addq v0, 8, v0 # E :
xor t0, a1, t1 # E :
cmpbge zero, t0, t2 # E : bits set iff byte == 0
cmpbge zero, t1, t3 # E : bits set iff byte == c
or t2, t3, t0 # E :
cttz t3, a2 # U0 : speculative (in case we get a match)
beq t0, $loop # U :
$found:
negq t0, t1 # E : clear all but least set bit
and t0, t1, t0 # E :
and t0, t3, t1 # E : bit set iff byte was the char
addq v0, a2, v0 # E : Add in the bit number from above
cmoveq t1, $31, v0 # E : Two mapping slots, latency = 2
nop
nop
ret # L0 :
END(strchr)
weak_alias (strchr, index)